Home / 21,520.44-29,698.92-12,089.88

Finding the Fourth Proportional to 21,520.44, 29,698.92 and 12,089.88

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Solution

The fourth proportional to 21,520.44, 29,698.92 and 12,089.88 is: 16,684.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,520.44 : 29,698.92 = 12,089.88 : x
  2. Step 2: Convert to fraction form
    21,520.44/29,698.92 = 12,089.88/x
  3. Step 3: Cross multiply
    21,520.44x = 29,698.92 × 12,089.88
  4. Step 4: Simplify right side
    21,520.44x = 359,056,378.93
  5. Step 5: Solve for x
    x = 359,056,378.93/21,520.44
  6. Step 6: Final answer
    x = 16,684.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.